/*
 * Created on 19 Jul 2006
 * Created by Paul Gardner
 * Copyright (C) Azureus Software, Inc, All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 */

package org.gudy.azureus2.core3.disk.impl.access.impl;

import org.gudy.azureus2.core3.config.COConfigurationManager;
import org.gudy.azureus2.core3.config.ParameterListener;
import org.gudy.azureus2.core3.disk.DiskManagerRequest;
import org.gudy.azureus2.core3.logging.LogEvent;
import org.gudy.azureus2.core3.logging.LogIDs;
import org.gudy.azureus2.core3.logging.Logger;
import org.gudy.azureus2.core3.util.SystemTime;

public abstract class DiskManagerRequestImpl implements DiskManagerRequest {
    private static final LogIDs LOGID = LogIDs.DISK;

    private static boolean DEBUG;
    private static int next_id;

    static {
        COConfigurationManager.addAndFireParameterListener("diskmanager.request.debug.enable", new ParameterListener() {
            public void parameterChanged(String name) {
                DEBUG = COConfigurationManager.getBooleanParameter(name, false);
            }
        });
    }

    private long start_time;
    private String name;

    protected abstract String getName();

    public void requestStarts() {
        if (DEBUG) {

            try {
                int id;

                synchronized (DiskManagerRequestImpl.class) {

                    id = next_id++;
                }

                name = getName() + " [" + id + "]";

                start_time = SystemTime.getCurrentTime();

                Logger.log(new LogEvent(LOGID, "DMRequest start: " + name));

            } catch (Throwable e) {
            }
        }
    }

    public void requestEnds(boolean ok) {
        if (DEBUG) {

            try {
                Logger.log(new LogEvent(LOGID, "DMRequest end: " + name + ",ok=" + ok + ", time=" + (SystemTime.getCurrentTime() - start_time)));

            } catch (Throwable e) {
            }
        }
    }
}
